CN203856883U - Large-scale ball bearing assembly used for power facilities - Google Patents
Large-scale ball bearing assembly used for power facilities Download PDFInfo
- Publication number
- CN203856883U CN203856883U CN201420283406.0U CN201420283406U CN203856883U CN 203856883 U CN203856883 U CN 203856883U CN 201420283406 U CN201420283406 U CN 201420283406U CN 203856883 U CN203856883 U CN 203856883U
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- CN
- China
- Prior art keywords
- ring
- magnet
- tinsel
- ring skeleton
- piezo
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000012544 monitoring process Methods 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 4
- 239000004020 conductor Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model relates to a large-scale ball bearing assembly used for power facilities, belonging to the technical field of bearings and monitoring thereof. The large-scale ball bearing assembly is characterized in that inner ring slots and outer ring slots are formed at the left and right ends of an outer ring and an inner ring respectively; frameworks with radial plates are installed on the left inner ring slot of the outer ring and the outer right ring slot of the inner ring respectively through interference fit; circuit boards and metal sheets are installed on the two sides of the frameworks respectively and form radial cavities; piezoelectric plates are bonded on the metal sheets corresponding to the radial cavities; excited magnets are connected with the piezoelectric plates and the metal sheets via bolts; sensors are installed on the frameworks, corresponding to the radial cavities; the piezoelectric plates, the metal sheets and the sensors are connected with the circuit boards via different conductor groups; two exciting magnets and two ball frames are fixed together by bolts in sequence; the opposite magnetic poles of two axially adjacent magnets are installed close to each other. The large-scale ball bearing assembly has the advantages that the large-scale ball bearing assembly has the functions of self energy supply, sensing and monitoring, is used as an independent standard part, dispenses with changing the structures of the installation equipment of the assembly and can achieve real-time online monitoring in the true sense.
Description
Technical field
The utility model belongs to bearing and monitoring technical field thereof, is specifically related to a kind of large scale ball bearing assembly for electric power facility.
Background technique
Bearing is a kind of typical mechanical basic part, has application extremely widely in fields such as machinery, vehicle, Aero-Space, steamer and the energy; Yet bearing is also one of the most flimsy part in rotary machine, 30% of rotating machinery fault is to be caused by bearing failure.Therefore, the status monitoring of bearing and Incipient Fault Diagnosis have caused people's great attention.The on-line monitoring of bearing state has progressively become the indispensable technology in field such as large-scale wind driven generator, steamer, high ferro and aircraft, and the index of required monitoring comprises such as temperature, vibration, rotating speed and noise etc.Early stage bearing monitoring system is mainly external hanging type, and one of its drawback is distant between sensor and signal source, belongs to non-contacting indirect measurement, therefore error is larger.In recent years, people have proposed again multi-form Embedded Monitoring System in succession, this method can solve measuring accuracy and accuracy problem, but need to change structure or its integrity of relevant device, so that installation sensing and monitoring system, the problems such as this not only easily causes that the stress of equipment component is concentrated also cannot realize on the equipment of some complex structures or limited space; The most key, when monitoring system need to be rotated with bearing inner race or outer ring, inconvenience is by line powered, and employing powered battery is very short service time.Therefore, current bearing monitoring system is all also non real-time, non-contact measurement indirectly substantially, is difficult to obtain timely and accurately the running state of bearing.
Summary of the invention
The utility model provides a kind of large scale ball bearing assembly for electric power facility, to solve existing bearing monitoring system existing in actual applications, it is all non real-time, non-contact measurement indirectly, be difficult to obtain timely and accurately the problem of the running state of bearing
The technological scheme that the utility model is taked is: comprise outer ring, ball, pearl frame one and pearl frame two, inner ring, two ends, left and right, described outer ring are respectively equipped with inner groove one and inner groove two, two ends, described inner ring left and right are respectively equipped with outer groove one and outer groove two, in the inner groove one of described outer ring, by interference fit, the ring skeleton one with disc one is installed, the endoporus of described ring skeleton one and the outer groove of inner ring one are Spielpassung, the outer groove two of described inner ring is provided with the ring skeleton two with disc two by interference fit, the outer rim of described ring skeleton two and the inner groove of outer ring two are Spielpassung, circuit board one and tinsel one are fixed by screws in respectively left side and the right side of ring skeleton one, and have altogether with forming airtight raia one with ring skeleton one and disc, piezo-electric sheet one is bonded on tinsel one, and be placed in raia one, excited magnet one is connected with piezo-electric sheet one and tinsel one by screw, described piezo-electric sheet one and tinsel one are connected with circuit board one by wire group one, sensor one is fixed on ring skeleton one, and be placed in raia one, described sensor one is connected with circuit board one by wire group two, described tinsel two and circuit board two are fixed by screws in respectively the left and right sides of ring skeleton two, and jointly form airtight raia two with the disc two on ring skeleton two and described ring skeleton two, piezo-electric sheet two is bonded on tinsel two, and be placed in airtight raia two, excited magnet two is connected with piezo-electric sheet two and tinsel two by screw, described piezo-electric sheet two and tinsel two are connected with circuit board two by wire group three, sensor two is fixed on ring skeleton two, and be placed in airtight raia two, described sensor two is connected with circuit board two by wire group four, exciting magnet one, pearl frame one, pearl frame two and exciting magnet two are successively by rivet together, between excited magnet one and exciting magnet one, between exciting magnet one and exciting magnet two, and the opposite pole between exciting magnet two and excited magnet two is near installing.
The utility model has the advantages that novel structure, bearing self has self energizing sensor monitoring function, and as independently standarized component use, the structure without changing its erection unit, can realize real time on-line monitoring truly.
Accompanying drawing explanation
Fig. 1 is the section of structure of a preferred embodiment of the utility model;
Fig. 2 is the structural representation while ring skeleton not being installed on the utility model bearing inner race and outer ring;
Fig. 3 is the A-A view of Fig. 1;
Fig. 4 is the B-B view of Fig. 1;
Fig. 5 is exciting magnet and the excited magnet principle schematic after relatively rotating in the utility model;
Fig. 6 be the utility model different determine angle than time excited magnet suffered active force and corner ratio graph of relation;
Fig. 7 is the utility model energetic coefficient, maximum force and excitation number of times and the graph of relation of determining angle ratio.
Embodiment
Comprise outer ring 1, ball 2, pearl frame 1 and pearl frame 23 ', inner ring 4, 1 two ends, left and right, described outer ring are respectively equipped with inner groove 1 and inner groove 2 101 ', described inner ring 4 two ends, left and right are respectively equipped with outer groove 1 and outer groove 2 401 ', in the inner groove 1 of described outer ring, by interference fit, the ring skeleton 1 with disc 1 is installed, the outer groove 1 of the endoporus of described ring skeleton 1 and inner ring 4 is Spielpassung, the outer groove 2 401 of described inner ring ' by interference fit, band disc 2 501 ' ring skeleton 25 ' is installed, described ring skeleton 25 ' outer rim and the inner groove 2 101 of outer ring 1 ' is Spielpassung, circuit board 1 and tinsel 1 are fixed by screws in respectively left side and the right side of ring skeleton 1, and jointly form airtight raia 1 with ring skeleton 1 and disc 1, piezo-electric sheet 1 is bonded on tinsel 1, and be placed in raia 1, excited magnet 1 is connected with piezo-electric sheet 1 and tinsel 1 by screw, described piezo-electric sheet 1 and tinsel 1 are connected with circuit board 1 by wire group 1, sensor 1 is fixed on ring skeleton 1, and be placed in raia 1, described sensor 1 is connected with circuit board 1 by wire group 2 12, described tinsel 27 ' and circuit board 26 ' is fixed by screws in respectively ring skeleton 25 ' the left and right sides, and with ring skeleton 25 ' and described ring skeleton 25 ' on disc 2 501 ' jointly form airtight raia 2 502 ', on piezo-electric sheet 2 10 ' be bonded in tinsel 27 ', and be placed in airtight raia 2 502 ' in, excited magnet 2 11 ' by screw and piezo-electric sheet 2 10 ' and tinsel 27 ' be connected, described piezo-electric sheet 2 10 ' and tinsel 27 ' is by wire group 39 ' with circuit board 26 ' is connected, on sensor 2 13 ' be fixed on ring skeleton 25 ', and be placed in airtight raia 2 502 ' in, described sensor 2 13 ' by wire group 4 12 ' and circuit board 26 ' be connected, exciting magnet 1, pearl frame 1, pearl frame 23 ' and exciting magnet 28 ' by rivet 15, be riveted together successively, between excited magnet 1 and exciting magnet 1, exciting magnet 1 and exciting magnet 28 ' between, opposite pole between and exciting magnet 28 ' and excited magnet 2 11 ' is near installing.
For improving generated energy, the radius of described each magnet equates and by formula
calculate, wherein: R is the radius of gyration of ball 2, n is the quantity of ball 2, that is exciting magnet 1 and exciting magnet 28 ' quantity;
be called and determine angle ratio, Q2=360/n is two adjacent exciting magnets 1 or two adjacent exciting magnets 28 ' center and the angle between the line of its gyration center O, Q1 is for by gyration center O and and described exciting magnet 1 or 28 ' angle between tangent straight line; Preferably determine angle than being k=1.5～3.5.
In working procedure, ball 2 is along with outer ring 1 or inner ring 4 rotate and roll, also drive pearl frame 1 and pearl frame 23 ' simultaneously, and the exciting magnet 1 and exciting magnet 28 that are connected with described pearl frame ' together with rotate, thereby make exciting magnet 1 and excited magnet 1 and exciting magnet 28 and produce relative movement between ' and excited magnet 2 11 ', and make the active force between exciting magnet 1 and excited magnet 1, between and exciting magnet 28 ' and excited magnet 2 11 ', active force changes, force piezo-electric sheet 1 and piezo-electric sheet 2 10 ' bending deflection that replaces, convert mechanical energy to electric energy, the electric energy that piezo-electric sheet 1 generates is exported to the transformation of energy processing circuit on circuit board 1 through wire group 1, then exports to sensor 1 through wire group 2 12, piezo-electric sheet 1 ' generate electric energy through wire group 39 ' is exported to circuit board 26 ' on transformation of energy processing circuit, then through wire group 4 12 ' export to sensor 2 13 ', thereby realize the self-powered Real-Time Monitoring of bearing movable state.
For guaranteeing that the electric energy of piezo-electric sheet generation can meet the self-powered demand of sensor, should improve the electric energy that piezo-electric sheet produces as far as possible.When exciting magnet and excited magnet relatively rotate one week, the electric energy that single piezo-electric sheet produces is
wherein: C
ffor the free capacitance of piezo-electric sheet, V
g=η F is the off load voltage that piezo-electric sheet generates, and η is the coefficient relevant with piezo-electric sheet yardstick and material, and F is the suffered applied external force of piezo-electric sheet, h=nF
2be called energetic coefficient.Obviously, when other condition is constant, can improve voltage by improving the suffered applied external force F of piezo-electric sheet, by improving energetic coefficient h, improve electric energy.Effect that the actual conditions that are space distribution according to the working principle of the utility model ball bearing assembly and magnetic field, arbitrary excited magnet 1 is all subject to a plurality of exciting magnets one 8 effects, arbitrary excited magnet 2 11 simultaneously ' be all subject to a plurality of exciting magnets 28 ' simultaneously.Therefore in the situation that other condition is definite, described certain excited magnet 1 and excited magnet 2 11 ' corresponding to determine angle more relevant than k with it respectively for suffered active force, and exist and preferably determine angle and make directed force F, voltage V than k
g, and electric energy E
glarger.In the utility model, preferably determine angle than being k=1.5～3.5 o'clock, the voltage obtaining and electric energy are all larger.
Fig. 6 provided different determine angle than time certain excited magnet 1 or excited magnet 2 11 ' suffered directed force F with corner than the test curve of j=Q3/Q1, wherein Q3 is the relative rotation of poststack of conducting oneself with dignity in the heart in excited magnet and exciting magnet, therefore corner characterizes than j, is certain excited magnet 1 or excited magnet 2 11 ' and its corresponding exciting magnet between distance.Fig. 6 explanation, determine angle when different, the suffered active force of described excited magnet big or small and the number of times difference encouraging.Active force maximum value, excitation number of times and energetic coefficient and determine angle than the relation curve of k as shown in Figure 7.Obviously, when getting k=1.5～3.5, gained voltage and electric energy are all larger, energetic coefficient be greater than its peaked 1/2.
Claims (1)
1. the large scale ball bearing assembly for electric power facility, comprise outer ring, ball, pearl frame one and pearl frame two, inner ring, it is characterized in that: two ends, left and right, described outer ring are respectively equipped with inner groove one and inner groove two, two ends, described inner ring left and right are respectively equipped with outer groove one and outer groove two, in the inner groove one of described outer ring, by interference fit, the ring skeleton one with disc one is installed, the endoporus of described ring skeleton one and the outer groove of inner ring one are Spielpassung, the outer groove two of described inner ring is provided with the ring skeleton two with disc two by interference fit, the outer rim of described ring skeleton two and the inner groove of outer ring two are Spielpassung, circuit board one and tinsel one are fixed by screws in respectively left side and the right side of ring skeleton one, and have altogether with forming airtight raia one with ring skeleton one and disc, piezo-electric sheet one is bonded on tinsel one, and be placed in raia one, excited magnet one is connected with piezo-electric sheet one and tinsel one by screw, described piezo-electric sheet one and tinsel one are connected with circuit board one by wire group one, sensor one is fixed on ring skeleton one, and be placed in raia one, described sensor one is connected with circuit board one by wire group two, described tinsel two and circuit board two are fixed by screws in respectively the left and right sides of ring skeleton two, and jointly form airtight raia two with the disc two on ring skeleton two and described ring skeleton two, piezo-electric sheet two is bonded on tinsel two, and be placed in airtight raia two, excited magnet two is connected with piezo-electric sheet two and tinsel two by screw, described piezo-electric sheet two and tinsel two are connected with circuit board two by wire group three, sensor two is fixed on ring skeleton two, and be placed in airtight raia two, described sensor two is connected with circuit board two by wire group four, exciting magnet one, pearl frame one, pearl frame two and exciting magnet two are successively by rivet together, between excited magnet one and exciting magnet one, between exciting magnet one and exciting magnet two, and the opposite pole between exciting magnet two and excited magnet two is near installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283406.0U CN203856883U (en) | 2014-05-28 | 2014-05-28 | Large-scale ball bearing assembly used for power facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283406.0U CN203856883U (en) | 2014-05-28 | 2014-05-28 | Large-scale ball bearing assembly used for power facilities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856883U true CN203856883U (en) | 2014-10-01 |
Family
ID=51606736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283406.0U Expired - Lifetime CN203856883U (en) | 2014-05-28 | 2014-05-28 | Large-scale ball bearing assembly used for power facilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994142A (en) * | 2014-05-28 | 2014-08-20 | 浙江师范大学 | Large size ball bearing component of electric power facility |
-
2014
- 2014-05-28 CN CN201420283406.0U patent/CN203856883U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994142A (en) * | 2014-05-28 | 2014-08-20 | 浙江师范大学 | Large size ball bearing component of electric power facility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141001 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |